Adhesive plaster.



F. N. LANG.

ADHESIVE PLASTER.

APPLICATION FILED 11110.13, 1912.

1,081,392. Patented Deo. 16, 1913.

/NVE/VTOR WITNESSES nenn N. Lane, or BAYFIELD, WISCONSIN.

ADHESIVE BLASTER.

Specification of Letters Patent.

Patented Dec. 16,1913.

Application tiled lDecember 13, 1912. Serial No. 736,548.

To all lwhom z't may concern:

Be it known that I, FRED'NLANG, a citizen of the United States, residing at Bayfield, in the county of Bayfield and State of Wisconsin, have invented new and useful Improvements in Adhesive Plasters, of which the following is a specication.

This invention relates to medicines, and more particularly to an improvement in adhesive plasters. -f

Adhesive plasters as a rule are made with a `close woven or waterproof fabric backing, one side of which is provided with a layer of medicated adhesive material, and -to prevent the adhesive surface from sticking to articles until ready for use generally a piece of thin cloth or gauze is applied over the adhesive side. Experience has shown that a plaster of this kind in warm weather, or Whenlsubjected to heat from any cause, will deteriorate as the medicated surface has the tendency to stick to the gauze or-cloth covering and soak into it thereby losing a part of its value. vAnother feature of the cloth or gauze covering is that in some cases it is very diiiicult to remove the covering from the plaster and in other cases where the plaster 1s put up in large strips, but is intended to be cut .out as needed, for instance, as corn plaster, it is necessary to cut both plaster and covering togetherand in such cases it is very -diilicult to remove the gauze or cloth covering without deforming the shape of the cut out piece.

It is the object of this invention'to provide a coverin for the adhesiveside ofthe plaster to whlch it will adhere suiiiciently to be retained thereon and at the same time the covering will protect the -medicated portion fromv deteriorating and will allow the plaster to be easily removed, and also allow the plaster to be cut in the shape desired for use and removed easily without deforming the cut out shape.

The advantages of this invention are obvious. Plasters of this character may be kept in stock without' fear of deterioration, they may be carried about under all conditions without becoming sticky and not lonly easily removed from the coverin but are also always ready to apply in per ect condition.

While the preferred forms of this inventionare illustrated uponthe vaccom anyin sheet of drawing, yet it is to be understood that minor detail changes may be made without departing from the scope thereof.

Figure 1 is a topl plan view of an adhesive plaster provided with a covering as contemplated in this invention. Fig. 2 is a view in perspective illustrating the cutting of a small size piece of the plaster and removing thesame as contemplated in this invention.

Fig. 3 is a view in longitudinal vertical section through the plaster and cover as illustrated in Fig. 1.

In the usual form of adhesive, medicated plaster the medicated adhesive side of the plaster is covered by a piece of cloth or gauze. In Fig. l, the plaster 1 is illustrated with its medicated side adhering to the impervious, hard, substantially solid covering 3 as contemplated in this invention. Of the different impervious, hard, substantially solid materials a thin piece of aluminium is preferablefor this covering, as this metal has a somewhat greasy surface that allows the plaster to adhere sutliciently' to act as a covering, -but will not stick, even when submitted to considerable heat, so as to cause diiliculty in removing and is of sufficient hardness to allow a piece of any desired size or shape t-o be out out of. the body of the plaster by a penknife and readily removed from the covering without deforming the shape of the piece or cutting through the covering, as illustrated in Fig. 3. .Aluminium is also preferableon account of its light weight and pliability which are both advantageous in packing, storing and shipping, however, other metals or cardboard l coveringthere or.

3. A plasterhaving an adhesive surface -and a covering therefor of alummlum.

FRED N. LANG.

Witnesses: i

' M. Dorm.

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